My wife wants a cock

While out with my wife in the pub this weekend our drunken conversation got round to sex, I mentioned fantasies, how I like to be tied and teased, nothing too frightening, my wife said she had imagined being made love to by my twin brother, (I don't have any brothers!!) and me at the same time.

I was a bit shook by this, I asked her to explain, she kissed me passionately, looked in my eyes and said that when we made love, at the point of cumming she always thought of being had by two men.

I got a huge hard-on, my wife was talking like a slut, she has only ever had my cock up her, she said the thought of four hands exploring her body, of being on all fours, being stroked and admired, (she's 5'11 and long in body), did I think she was dirty?

When we got home she took me by the hand to the bedroom and lay me out naked, she climbed on top and placed her sopping lips either side of my cock, she told me not to enter her just yet. She then asked me to tell her about what me and my 'brother' were going to do to her.

I was very detailed and she came very violently, with loud screams, (not usual). I don't know much about swinging so googled it, personalclips.com seems to allow you to tell your story, and get some advice, I'm scared of joining this site in case the wife finds out, but do you think she just wants to talk or do you think she might actually want another man to fuck her?

I love my wife and am apprehensive about another man fucking her, I have issues over my cock, but am very turned on by the fantasy, can you enjoy the fantasy without going too far?